TSEM9814 | Property held jointly by married couples or civil partners: The 50/50 rule: 50/50 rule and exclusions
From HM Revenue & Customs · Trusts, Settlements and Estates Manual
Income from property held jointly by married couples and civil partners is treated as beneficially owned by the individuals in equal shares under ITA/S836. Consequently they are taxable on the income 50/50. This rule applies even if the individuals own the property in unequal shares. It can be disapplied only by a declaration on form 17 under ITA/S837. Full details of how the 50/50 rule operates in practice are given at TSEM9828-9840.
There are some specific exclusions from the 50/50 rule about income. The 50/50 rule does not apply to
income to which neither of the individuals is beneficially entitled (TSEM9816)
partnership income (TSEM9818)
income arising from the commercial letting of furnished holiday accommodation (TSEM9820)
income from jointly held shares in a close company (TSEM9822)
income in relation to which a declaration by the individuals under section 837 has effect (unequal beneficial interests) (TSEM9826)